An issue that could result in a stray focus rectangle becoming visible in certain apps, such as Groove or Cortana, after bringing up the keyboard has been fixed

An issue where the aspect ratio of images on live tile wasn’t preserved if they need to be shrunk, leading to them appearing stretched has been fixed

Windows 10 Insider Preview Build 14379 and Windows 10 Mobile Insider Preview Build 14379 are now rolling out through Windows Update as part of the company's Fast Ring builds program for registered Windows Insiders.